Washing machine



Mar. a, 1925. 1,528,069

. H. ,R. MERSELES WASHING MACHINE Filed July 8, 1922 2 Sheets-Sheet 1INVENTOR nanny a. MERSELES,

Patented Mar. 3, 1925.

OF BRONXVILLE, NEW YORK, ASSIGNOR '10 HERBERT E. MER- 1,528,069 PATENTOFFICE.

I SELES, or BRONXVILLE, NEW YORK.

WASHING maonmn Application filed July 8,

fl '0 all whom it may concern:

Be it known that I, HENRY R. MERSELES,

a citizen of the United States, residing at Bronxville, in the county ofWestchester and State of New York, have invented certain new and usefulImprovements in VVashing Machines, fully described and represented inthe following specification and the accompanying drawings forming a partof the same.

This invention relates to dish washing machines, and particularly tothose in which the washing and rinsing take place in the same chamber,and aims to facilitate the operation of such machines so as to increasethe number of dishes or other articles which may be washed in a givenperiod of time.

A specific object of the invention is to provide means for cutting offthe flow of wash water during the rinsing operation without causing anagitation of the surface of the water in the tank of the machine,

'- which would prevent decanting the grease floating on this water.

The invention may best be understood from a description of a completedish washing machine incorporating apparatus em-' bodying the invention.Such a machine is illustrated in the accompanying drawings, in which:--

Fig. 1 is a side elevation of the dish washiliig machine sectioned onthe line 11 of Fig. 2 is a front elevation of the machine sectional onthe line 2-2 of Fig. 1;

Figs. 3, 4 and 5 are enlarged detail views of the pump and. cut offvalve, Fig. 3 being a vertical section on,the lines 33 of Figs.

2 and 4, Fig. 4 a front elevation, andFig. 5

a plan view with parts removed. I

The dish washing machine illustrated has a casing 10 which encloses thedish chamber 11. A tank 12 is provided at the bottom of the dishchamber. Horizontal supports 13 extend through the dish chamber 11 and 4provide means for supporting a dish rack 1922. Serial No. 573,682.

ler of a centrifugal pump 16 located in the tank 12 and adapted to drawwater-from the tank and force it through a standpipe 17 into rotary washwater projectors 18 located above and below the dish rack. The rinsingmechanism includes spray nozzles 19, 20 located respectively above andbelow the dish rack and pipes 21, 22 leading to the spray nozzles andprovidedjwith manually operable valves 23, 24.

In the operation of dish washing machines having theparts thus fardescribed, the water contained in the tank 12 has been used over andover again in the washing of the dishes, this water being forced up fromthe tank by thepump 16 and falling back into the tank after it haspassed over the dishes. After the dirt adhering to the d shes has beenremoved by projecting the wash water against them, it has been customaryto stop the supply of dish water to the rotary projectors 18 bystoppingthe motor 15. Clean rinse water has then been projected againstthe dishes from the nozzles 19, 20 by opening the valves 23, 24. ThisWater has fallen into the tank 12 and caused an overflow through thepipe 9. As -the overflow has been gradual, the grease which floated onthe top of the water in the tank 12 after the dishes had been washed hasbeen decanted through the pipe 9, leaving the water in the tankcomparatively clean. After the washed dishes have been removed andreplaced by soiled dishes the motor 15 described, considerable time hasbeen consuined in stopping and starting the pump and motor, owing to theinertia of the mov-. ing parts. As it has been necessary to stop andrestart the motor for each rinsing operation, much time has been wastedthis way. I

The present invention eliminates this waste of time by providing meansfor cutting off the supply of wash water to the rotary projectors 18without stopping the pump and motor and without interfering withdecanting the grease during the rinsing operation. Apparatus embodyingthe invention includes a cut off valve between the pump and the washWater projectors and means for preventin the water thrown out by thepump when t e cut off valve is closed from agitating the upper surfaceof the water in the tank. In the drawings is shown a specific form ofsuch apparatus applicable for use in connection with a centrifugal pumpsubmerged in the water in the tank;

The pump 16 is submerged in the water in the tank 12. The pump casing 30is substantially cylindrical and has a tangential portion 32 at the endof which is the discharge opening 31 of the ump. The

' casing 30 is provided at one side with projections 33 which are boltedto the back wall of the tank 12 so as to hold, the pump casing in spacedrelation to this wall. The shaft 34 of the motor 15 extends through astufling box in the front wall of the tank 12 and enters the pump casing30. A bearing 35 for the shaft 34 is provided on a fin 36 projectingfrom the front side of the pump casing. An impeller 37 is mounted on theend of the shaft 34 within the pump casing 30. The outer Wall of thepump casing is provided with a central opening 39 of sutiicient size topermit the introduction of the impeller 37. The opening 39 is partiallyclosed by a ring 40 which is secured to the front side of the pumpcasing by bolts 41 after the impeller has been placed in the casing. Theinner wall of the pump casing contains a central opening 38 which isopposite the central opening 42 of the ring 40. T he openings 38 and 42serve as intake openings in the normal operation of the pump.

The upper end of the tangential portion of thepump casing is providedwith an external flange 45 to which is bolted a similar flange 46 formedon the lower end of the standpipe 17. 'The two flanges lie below thewater level in the tank 12. The flange 46 contains a transverse recessor way 47 in which a valve member 50 is slidably mounted. The valvemember 50 has the form of a flat plate and contains an opening 51. Thevalve member 50 is operated by means of a lever 52 whose lower endenters a slot 53 in the valve member. The lever 52 is fulcrumed on thecasing 10 at 53. The upper end of the lever 52 is connected by a rod 54with an arm 55 projecting from a short shaft 56 which extends throughthe top of the casing 10. An operating arm 57 extends from the shaft 56above the top of the casing 10.

It is apparent from the arrangement described that by moving the end ofthe o crating arm 57 the valve member may e made to slide in the way 47so as to bring its opening 51 into and out of alignment with thedischarge opening 31 of the pump casing. When the arm 1s moved to theleft to position the valve member as shown in Fig. 2, the valve member50 cuts off the discharge opening of the pump casing. When the valve isthus closed while the pum is in o eration, some of the water force intot e tangential portion 32 of the casing by the impeller leaks outthrough the way 47 under the valve member 50. As, however, the

valve is submerged in the water in the tank #12, the water which comesout under the valve member does not agitate the upper surface of thewater in the tank.

But it is only a small portion of the water normally discharged out 'ofthe pump that passes out through the .way 47 under the valve member 50when the valve' is closed. It has been found that the rotation of theimpeller, when the discharge is thus cut off, results in drawing waterinto the pump casing through the lower portions of the openings 38 and42, and projecting this water outwardly and upwardly through the upperpart of these openings.

In order to prevent the water thus discharged from the upper part of theopening 38 from causing an agitation on the surface of the water in thetank, a curved deflector 60 is secured to the upper edge of the pumpcasing. This deflector extends from the pump casing to the back wall ofthe tank 12 and thus effectively prevents water discharged through theupper part of the opening 38 from reaching the surface of the water inthe tank. to the pump casing by screws 61 which pass through elongatedslots 62 in the deflector The deflector is secured so as to permit suchadjustment of the deof the opening 42 from reaching the upper surface ofthe water in the tank. The deflector 65 has a flange 66 which is securedto the front of the pump casing by the bolts 41 which hold the ring 40,and a semicy-- lindrical portion 67 which extends around the upper sideof the bearing 35. It is apparent that this deflector serves to directthe water discharged to the upper partof the opening 42 in a horizontaldirection so that it causes no agitation at the surface of the water inthe tank.

In the operation of the washing machine provided with the apparatusembodying the invention which has been described, the motor and pump areallowed to operate continuously. During each rinsing operation andduring the removal of the washed dishes and the introduction of soileddishes, the arm 57 is placed in a position shown in Fig. 2, so that nowash water is supplied to the rotary projectors 18. During the washing,

the arm 57 is moved to the right (Fig. 2),

. taneously. The waste of time formerly involved in stopping andstarting the pum and motor is, thus, altogether eliminate In con uence,the number of dishes or other artlcles which may be washed in a givenperiod of-time is materially increased. It w1ll be apparent to thoseskilled in the art that the cut ofi and deflecting elements. illustratedin the drawings may be modified to adapt them to washin machinesdiflering in construction from t at illustrated. It should beunderstood, therefore, that the invention is by no means limited to theparticular form and arrangement of partsillustrated.

What is claimed. is a 1, The combination with a dish washing machinehaving alidish chamber containing a.

wash water projector and a rinse water projector, a tank located at thebottom of the .dish chamber, an overflow outlet for said tank, a pumphaving an intake opening in communication with said tank and a. dischare opening, and a conduit leading from. the ischarge opening of the pumpto the wash water pro ector, of .a cut off valve in said conduit,andmeans for preventing the water forced out of the pump when the cutoff valve is closed from agitating the sur-' face of the water in thetank. I

2. The combination with a dish washing machine having a dish chambercontaining a wash water projector and a rinse waterprojector, a taliklocated at the bottom of the dish chamber, an overflow outlet for 'saidtank, a pump having an intake opening in communication with said tankand a dischar e opening, and a conduit leading from the ischarge openingof the pump to the wash water projector, of a cut off valve in saidconduit, and means for directing the water forced out of thepump'whenthe cut ofl' valve-is closed into the body of water in the tankbelow the surface thereof and in a direction toward a said surface.

3. The combination'with a dish washing machine hav'ihg adish chambercontaining a wash water pg-ojector and a rinse water projector, a tanlocated at the bottom of the dish chamber, an overflow outlet for. saidtank, and a pump having an intake opening communicating with said tankand a dispart of thetank below charge opening, of a conduit leading fromischarge opening of the pump to the the wash water pro ector and having.a. portion located within the tank and below the overand a loosefitting cut off v said slot.

wash water projector and a rinse water projector, a tank located at thebottom of the dish chamber, an overflow outlet for said tank, acentrifugal ump' located in said tank below said overflow outlet and haa central intake opening and a tangent' discharge opening, and a conduitleading from the discharge opening of the pump. to t the wash waterprojector, of a. cut ofl valve L in said conduit, and a deflectorprojecting outwardly fromv the casing. of the pump above its'intakeopening.

"5. The combination with a dish washing machine having a dish chambercontaining a wash water projector and a rinse water projector, a tanklocated atthe bottom of the dish chamber, an overflow outlet for saidtank, and a centrifugal pump-located in said tank below said overflowoutlet and having a central intake 0 in each side of its casing and antlal discharge opening, of a conduit leadmg from the d1scharge openingof the pump to the wash water projector and containing a transverse slotlocated below the overflow outlet of the tank, a loose fitting cut offvalve mounted in said transverse slot, and deflectors projectingoutwardly from the casing of the pump above its intake openings.

6. The combination with a dish washing machine having a dish chambercontaining a wash water projector and a rinse water projector, a tanklocated at the bottom .of the dish chamber, an overflow outlet for saidtank, a centrifugal pump having a rotary impeller and a casing havingone of its sides secured to one of the walls of said tank in spacedrelation thereto and ha a. central intake 0 ning in said side and avin'ga tan ential discharge 0 ning, and a conduit aging from the disc argeopening of the pump to the wash water projector, of a cm. ofl valve. insaid conduit, and a-deflector extending from the pump casing to the wallof the tank to which said casinglis secured casing.

" In testimony whereof I have hereunto set my hand.

' HENRY R. MEBSELES.

